Enclosed double vanity drain/vent

Im finally ready to hook my enclosed double vanity up.

i have attached a diagram

A is a 90 deg hubxhub TY
B is a long 90 deg elbow
C is a sanitee (can also be swapped with a A?)
most black lines are studs., 2x4's
red is existing drain
blue is vent (blue attached to red/c which goes all the way up was existing)

the vanity is a fully enclosed double vaniy, and each section under the sink is seperated by a wall (cabinets/storage) so the drains need to connect in wall..

I did search and see that another way i could have set this up was if i used a 4-way sanitee in the middle, branched left and right for the drains and simpy gone down and then left to hook to the drain... and vent would have been up and left... But i couldnt drill holes low enough, some sort of steel reinforcement? anyway.,

will the attached work? am i using the right connectors? i made sure i got the long 90's for proper flow and venting

Way too many vents there. Don't know distances but you only need one of the lav vents.

This is for a wall mounted vanity

I would use a fixture cross like this and the picture above this post.

drain

As long as you had to install the horzontal drain line, unless you were reusing one that originally just had one sink, there are at least two other ways I would do it that are much better than that one. You do not need the left hand vent, and, the way you have it connected, the center one is not doing anything except taking up space .

grrrrrrrrrr!

Thank you all

Distance from vertical drain to rightmost elbow is about 7 feet

Also, couldn't find a cross at ********* checked 2 diff ones? Strange?
I made the mistake of cementing the a+a center piece, and the top left vent stuff. For some reason I missread or assumed that "more than 5 feet vent" and "each ptrap need vent" were advice that applied to my setup.

Is there any harm in having too much vent? Besides being too busy?

Hj, only thing bring reused was the vert drain + it's vent

k., time to go put my extra vented setup together...